Bill Gates honors Warren Buffett's 90th birthday with funny cake baking video

What do you gift the person who already has everything?

On Sunday, Bill Gates posted a tribute to his friend Warren Buffet on Twitter, wishing the Berkshire Hathaway tycoon a happy birthday. "Happy 90th birthday, Warren!" the tweet said, and accompanying the words was a minute-long, artistically shot baking video. 

In the clip, a pair of hands presumably belonging to Gates cracks eggs, chops up pieces of chocolate and melds together other cake ingredients. Once the bread layers of the dessert are finished baking, the hands decorate the decadent-looking Oreo cake, which ultimately has Buffett's face on top. 

At the end of the video, Gates holds up the cake, smiles and cuts a slice. 

The clip ends with the message, "Happy 90th birthday Warren" surrounded by Oreo dust. The video was set to Randy Newman's classic song "You Got a Friend in Me."

Buffett and Gates are longtime buddies.

The influential businessmen met almost 30 years ago, according to a blogpost Gates pinned in 2016 to mark 25 years of friendship. In the post, Gates recounts seeing Buffet eat Oreos for breakfast. 

"He may set a poor example for young people, but it’s a diet that somehow works for him," Gates wrote. In a separate blog post, Gates said the short birthday video to Buffett is "in honor of his dietary preferences."

Follow Dalvin Brown on Twitter: @Dalvin_Brown.